Latest Vulkan Runtime Libraries:
The latest Vulkan RT is usually not available with the latest nVidia drivers. While if the newest RT is not technically supported by the latest nVidia driver, installing the newest RT will gain you the latest bug fixes. Having the latest RT installed, even if not running the nVidia Vulkan specific drivers, will always be of benefit.Vulkan RT 1.1.101.0 Download - March 01, 2019

vulkan RT is already in the "Display.driver" folder that already exist in the three method of installation according to your pic "you can't delete this folder anyway" so why upload it again or do i miss anything ??

vulkan RT is already in the "Display.driver" folder that already exist in the three method of installation according to your pic "you can't delete this folder anyway" so why upload it again or do i miss anything ??

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EDIT: The best answer to this is that the latest Vulkan RT is usually not available with the latest nVidia drivers. While if the newest RT is not technically supported by the latest nVidia driver, installing the newest RT will gain you the latest bug fixes. So, having the latest RT installed will always be of benefit.

Old Answer: Because it won't install it unless you install the driver straight from the original package or you do it yourself. I don't run the original installer as I unpack it and install what I want so nVidia doesn't install the Vulkan drivers. I didn't realize this until the other day. Just trying to help some people out.

Hmm, I've been doing this forever now and vulkan is installed every single time.
I remove all folders except NVI2, PhysX and Display.Driver - then I install the driver using setup.exe, do a custom clean install, select everything and done. Vulkan gets installed every time. Am I missing something here...

Because it won't install it unless you with install the driver straight from the original package or you do it yourself. I don't run the original installer as I unpack it and install what I want so nVidia doesn't install the Vulkan drivers. I didn't realize this until the other day. Just trying to help some people out.

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i always use DDU before installing a new driver and using the free of crap method and every time the vulkan rt gets installed no problem with this at all and playing vulkan games such as Doom and Wolfenstein II: The New Colossus with no problem or i miss something ?? i have no problem with uploading a separate installer i just asking if i do something wrong

Sorry to say OP but you got two things wrong, one, the latest version is 1.0.65.1, and two, Vulkan IS installing, but since a few versions ago it is intentionally not shown in the installed programs list.

I think the official runtime does that too, although come to think of it I never stripped out the 1.0.65.1 ones from the full SDK though it's just some smaller fixes to the installer itself as I remember from the changelog and nothing for the Vulkan loader or .dll files.
(Which well the driver whether AMD or Nvidia likely have their own Vulkan files but sometimes the runtime fixes a few bugs and not just support for new extensions and such.)

It can still be seen via something like CCleaner or you can just go to the C:\ Program Files folder and the Vulkan sub folders and run the uninstaller from there to remove it, which I tend to do since this system uses the Highlander rules and there can only be one.
(Don't really need more than the latest runtime since it's backwards compatible after all, maybe for the SDK itself and programming or debugging through different versions but regular users likely have no need of that.)

Sorry to say OP but you got two things wrong, one, the latest version is 1.0.65.1, and two, Vulkan IS installing, but since a few versions ago it is intentionally not shown in the installed programs list.

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All I know is that Wolfenstein 2 wouldn't run until I manually installed Vulkan because it was not recognising it as installed. I thought I would put it up here for people in case they ever need it. Also, no you are wrong. Extract the driver and look in the display.driver folder. nVidia provides 1.0.65.0 not 1.0.65.1. I am providing the one nVidia provides with their driver not from any other source. If you install the VulkanRT from the nVidia driver it will show up in your program files as that version.

All I know is that Wolfenstein 2 wouldn't run until I manually installed Vulkan because it was not recognising it as installed. I thought I would put it up here for people in case they ever need it. Also, no you are wrong. Extract the driver and look in the display.driver folder. nVidia provides 1.0.65.0 not 1.0.65.1. I am providing the one nVidia provides with their driver not from any other source. If you install the VulkanRT from the nVidia driver it will show up in your program files as that version.

I'd delete the HD Audio folder unless you're playing through TV speakers (eww) and the PhysX folder as well since it's pretty much dead and eats FPS on the older games it runs on.

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I like to use the latest nVidia approved version of Vulkan, don't need the SDK as I am not a developer (which is why I install the latest run-time - not the SDK, and I do use the TV speakers when I play couch games with my friends as I have 6 controllers; we play multiplayer games on the TV a lot. As for the PhysX I am pretty sure a lot of games still use it and will continue to install it unless you can point me somewhere that I can read about your claims.

It was same with Intel drivers. After Installations of nvidia and intel drivers, i was ending up with two different vulkan runtimes all the time. Thats probably why they gave up with this and from some time i have no entry in Programs and Features. Games and vulkan demos works anyway. So it must be that runtime is installed anyway, just few dll in system folders or so, like with ocl.
Its something with Wolfenstein game that does not detect runtimes correctly, or need some additional vulkan files that devs forgot to remove from requirement. Also, question with what version nvidia drivers you tried vulkan applications, because two last versions have problem reporting vulkan support - which you fix with adding one registry entry https://forums.rpcs3.net/thread-197839.html

Normally when you install Vulkan run times, it copies "nv-vk64.json" and "nvoglv64.dll" (I can't check the name of this one from here) and the 32 bit versions to "/Windows/system32/" and then sets the registry in "HKEY_LOCAL_MACHINE \ SOFTWARE \ Khronos \ Vulkan \ Drivers" to have a dword named as the path to the json file.

While there is this problem with installing Vulkan, it's sufficient, rather than manually copying files to system32, just to point to the json in the driverstore folder in "HKEY_LOCAL_MACHINE \ SOFTWARE \ Khronos \ Vulkan \ Drivers". The json points to the folder it is stored in for the required dll files, and the correct files are beside it in the driverstore.

But in case there is variation in the folder in the driverstore, check in "/windows/system32/driverstore /" for the location of the json file in the newest driver folder,and confirm its in the registry.

Oh but after setting the location in registry, you need to reboot or run vulkaninfo.exe which is in a sub folder in "/program files (x86)/Vulkan RT/". Them Vulkan should correctly appear in RPCS3.